Male gametes are flagellated in:

1.	Polysiphonia	2.	Anabaena
3.	Ectocarpus	4.	Spirogyra

Vascular bundles in monocotyledons are considered closed because:

  is the floral formula of:

A major characteristic of the monocot root is the presence of:

Keel is the characteristic feature of a flower of:

Perigynous flowers are found in:

Leaves become modified into spines in the:

The structures that are formed by stacking of organised flattened membranous sacks in the chloroplasts are:

The chromosomes in which the centromere is situated close to one end are:

Select the correct matching among the following pairs.